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49

Common SCSI bus problems

www.gateway.com

Common SCSI bus problems

SCSI bus problems can usually be attributed to cabling issues or a faulty SAF-TE 
Disk I/O card. Refer to the chart below and review troubleshooting and fault 
isolation procedures to assist you in identifying the suspect component.

SCSI bus 
Symptom

Probable cause

Solution

Host SCSI BIOS 
scan hangs.

Possible termination 
or SCSI ID conflict.

Check the Host ID and correct system 
configuration. 

Not all drives 
connected to the 
HBA channels are 
displayed during 
boot.

Possible termination 
or SCSI ID conflict.

Check that the SCSI connectors are correctly 
connected. Check SCSI ID assignments.

If the enclosure is the daisy-chained enclosure, 
check the I/O card jumper settings in the last 
enclosure on the chain.

Содержание 850

Страница 1: ...user sguide your Gateway 850 SCSI storage enclosure Installing Configuring...

Страница 2: ......

Страница 3: ...Installation 13 Overview 13 Enclosure detailed installation 15 Installing the storage enclosure in a rack cabinet 15 Enclosure configuration 21 Host cabling 28 Turning on the enclosure 29 Turning off...

Страница 4: ...Warnings 55 Errors 55 Disk errors 56 Disk channel errors 58 5 Maintenance 61 Removing the front bezel 62 Replacing the cooling fans 63 Replacing a power supply 66 Replacing a drive 67 Replacing the S...

Страница 5: ...1 1 About the Gateway 850 SCSI Storage Enclosure Read this chapter to learn about Enclosure features Components and connections Control and monitoring functions...

Страница 6: ...e of your new Gateway 850 SCSI Storage Enclosure The enclosure is the new generation of fully fault tolerant Ultra320 SCSI storage solutions available in a unique 2U design that fits in a compact spac...

Страница 7: ...em enclosure Supports as many as 12 drives Designed to fit EIA 310D standard 19 inch rack enclosures Sequential data transfers from disk arrays at over 320 MB sec sustained Operating system independen...

Страница 8: ...U D S E L D L Y S T R T R M T S T R T JP8 AD D JU M PE R TO DI SA BL E TE RM IN AT IO N AD D JU M PE R TO SU PP LY TE RM PO W ER C H A N N E L 1 C H A N N E L 2 J P 1 A D D J U M P E R T O D IS A B L...

Страница 9: ...es with SAF TE processors SEP and the drives in the enclosure It passes information to the front bezel Channel Mode and drive status LEDs For more information on monitoring functions see Control and m...

Страница 10: ...einstall the cover plate J P 7 AD D JU M PE R TO DI SA BL E TE RM IN AT IO N AD D JU M PE R TO SU PP LY TE RM PO W ER J P 6 JP5 C N F G 1 C N F G 2 R A ID S P A R E 1 S P A R E 2 B A U D S E L D L Y S...

Страница 11: ...cate that enclosure is turned on The front bezel power LED turns green when both power supplies are on and operating normally If only one power supply is operational the front bezel power LED turns or...

Страница 12: ...es status of the cooling fans which turns on the Fan Status LED and an alarm The SAF TE processor will also provide the notification data to any monitoring software The enclosure temperature sensors a...

Страница 13: ...system for the appropriate addresses They then execute firmware from the on board flash memory and perform a self test The firmware is flash upgradeable using the SAF TE RS 232 Service port located be...

Страница 14: ...SCSI bus termination In JBOD Dual Bus mode the Channel 1 connector provides SCSI bus access to the drives in slots 7 through 12 and the Channel 2 connector provides access to the drives in slots 1 th...

Страница 15: ...more complete details The enclosure incorporates a One Touch Annunciation which provides an LED readout of the current switch configuration host interface type bus configuration communication BAUD set...

Страница 16: ...D is green when both fans are functioning normally The LED is orange if any of the fans fail Drive LEDs The Drive LEDs are located on the left side of the front bezel between the ventilation ribs and...

Страница 17: ...e enclosure Each section will step you through the hardware installation cabling and topology configurations and upgrades It is important to thoroughly review this information and perform the procedur...

Страница 18: ...second section describes setting the SAF TE Disk I O card switches and the enclosure to enclosure cabling The SAF TE card switch settings determine the SCSI IDs RAID Addressing and disk spin up optio...

Страница 19: ...thin your rack cabinet If you are installing more than one enclosure you should consider the location of the enclosures in relationship to each other to make sure that the cables will easily reach bet...

Страница 20: ...ing both hands grasp and pull the front bezel away from the enclosure Store the bezel in a location so that it will not be damaged 5 Remove each of the power supplies by grasping each handle and press...

Страница 21: ...able during the installation 8 Lift and secure the enclosure into the rack cabinet a Position the enclosure in the cabinet at the desired location b Secure the left and right front chassis flanges to...

Страница 22: ...n bay and sliding the power supply in Make sure that the power supply completely seats in the enclosure The power supply will fit flush and the latch will reset as the power supply reaches its fully s...

Страница 23: ...sure that the drive fits very tight so it requires some force to push the drive into its bay Make sure that the drive seats completely Repeat this step to populate all the drive slots c Reinstall the...

Страница 24: ...or the other power cord 12 Repeat the above steps for each additional enclosure you are installing Before you continue The next section includes steps and diagrams for setting the SAF TE Disk I O card...

Страница 25: ...s up to a 12 drive storage solution Single bus mode In single bus mode default Channel 1 on the SAF TE Disk I O card assesses all the drives 1 through 12 The installed single bus module connects Chann...

Страница 26: ...osure Loosen the two thumb screws and pull the card from its slot location 2 Locate the switches on the card and set them as described in the following switch setting diagrams Some configurations have...

Страница 27: ...2 ID 5 ID 6 ID 13 ID 14 UP 1 DOWN 0 Drive IDs of the Drive Slots Drive Channel Side SAF TE ID 15 Host ID 0 or 7 Single Bus Mode R D A 0 1 2 3 4 5 6 7 8 A 1 S 0 S 1 B D D L R M Switch Settings ID 1 Slo...

Страница 28: ...ive configuration setup Follow your operating system requirements for preparing new drives then see Turning on the enclosure on page 29 SCSI Data Cable SAFTE Disk I O Host Computer Single Bus Mode Chl...

Страница 29: ...ed in the Controller 1 slot This single bus module connects Channel 1 and Channel 2 together to create a single continuous SCSI bus Single bus mode In the preceding logical diagram the drive slots are...

Страница 30: ...M P E R T O D IS A B L E T E R M IN A T IO N C H A N N E L 1 C H A N N E L 2 R D A 0 1 2 3 4 5 6 7 8 A 1 S 0 S 1 B D D L R M UP Off 1 Channel 2 Termination Jumper Channel 1 Termination Jumper Channel...

Страница 31: ...24 drive configuration setup Follow your operating system requirements for preparing new drives SAFTE Disk I O Single Bus Mode Chl 1 Ctlr 1 Ctlr 2 SAF TE Chl 2 Single Bus Module Power Supply Power Sup...

Страница 32: ...s correctly configured to support this feature Refer to your host operating system user s guide for information on how to perform this procedure 3 Connect the SCSI data cables Refer to the topology de...

Страница 33: ...te the power supply On Off switches at the rear of the enclosure 2 Press each power supply power switch to its On position Each enclosure performs a power on self test POST during its initial start 3...

Страница 34: ...30 Chapter 2 Setup and Installation www gateway com...

Страница 35: ...managing the enclosure s SAF TE firmware You should monitor your enclosure regularly to make sure that the drives controllers arrays and enclosure components are working correctly The front bezel LED...

Страница 36: ...Channel Status LED Power Supply Status LED and Fan Status LED The following are descriptions of each of the LEDs Power LED When the Power LED is green it indicates that the enclosure is turned on Cha...

Страница 37: ...tus LEDs comprise the One Touch Annunciation monitoring system which can display the status of controllers and SAF TE card switch settings from the touch of the Alarm Reset button For more information...

Страница 38: ...Drive LEDs This LED is green when a drive is present in the slot and powered on If a drive is not present the LED will be off Drive Activity LEDs There are twelve Drive Activity LEDs These LEDs will f...

Страница 39: ...rive Slot 4 Status LED Switch 1 SCSI IDs A0 On Enabled Off Disabled Drive Slot 7 Status LED Switch 2 SCSI IDs A1 On Enabled Off Disabled Drive Slot 10 Status LED Switch 3 RAID Addressing RD On Enabled...

Страница 40: ...s Status LEDs Activity LEDs Status LEDs Activity LEDs Drive Slot 1 Drive Slot 4 Drive Slot 7 Drive Slot 10 Drive Slot 2 Drive Slot 5 Drive Slot 8 Drive Slot 11 Drive Slot 3 Drive Slot 6 Drive Slot 9 D...

Страница 41: ...sition which sets the BAUD rate for the SAF TE RS 232 serial port to 9 600 Drive Slot 6 Off N A Drive Slot 7 Off Switch 2 A1 is in the DOWN position This will set the Drive SCSI IDs of the slots to ID...

Страница 42: ...this program by connecting a VT 100 terminal to the SAF TE Service port To access the monitoring program 1 Connect one end of the null modem RS 232 cable to the SAF TE Service port located on the rear...

Страница 43: ...tch 6 up for 19 200 and down for 9 600 verify the setting by pressing the Alarm Reset button and noting the condition of the Drive Status LED for Drive slot 5 8 Data bits 1 Stop bit None parity Flow C...

Страница 44: ...ure up time System degradation will occur if the display is left in the Show Enclosure Environment Status mode After you have viewed the information press ESC to remain idle in the main Enclosure Term...

Страница 45: ...eed to turn off the enclosure to perform this function To upload new firmware 1 Connect one end of the null modem RS 232 cable to the SAF TE Service port located on the rear panel of the enclosure The...

Страница 46: ...y Switch 6 up for 19 200 and down for 9 600 verify the setting by pressing the Alarm Reset button and noting the condition of the Drive Status LED for Drive slot 5 8 Data bits 1 Stop bit None parity F...

Страница 47: ...om the Xmodem send screen you can monitor the progress of the upload You can safely stop the transfer without affecting your existing firmware any time during the transfer until it has been completed...

Страница 48: ...apter 3 Monitoring Systems www gateway com 9 After the upload completes the Upload program updates the second SAF TE processor A progress status screen appears At 100 progress the following screen app...

Страница 49: ...TE controller card firmware www gateway com After the confirmation is complete the following screen appears 10 Verify the new firmware has successfully loaded then type CTRL E 11 Press ESC to return...

Страница 50: ...46 Chapter 3 Monitoring Systems www gateway com...

Страница 51: ...4 47 Troubleshooting This chapter provides typical solutions for problems you may encounter while using the enclosure...

Страница 52: ...wer cord is correctly connected to the power module If the enclosure is plugged into a three hole grounded outlet verify that power to the outlet has not been interrupted This can be accomplished by t...

Страница 53: ...ect component SCSI bus Symptom Probable cause Solution Host SCSI BIOS scan hangs Possible termination or SCSI ID conflict Check the Host ID and correct system configuration Not all drives connected to...

Страница 54: ...em has the faulty component If this does not return the remaining drives to a normal state it is a good indication that the problem is in the first storage system and or its SAF TE Disk I O card You m...

Страница 55: ...hile continuing to press the spacebar This will allow the controller to auto detect the baud rate setting When the Flash Utility appears select option 5 to continue to boot the controller Some termina...

Страница 56: ...ot conflict with any other devices on the host SCSI channel If you have a long SCSI cable try a different or shorter cable Problem Solution Not all drives connected to the controller device channels a...

Страница 57: ...Contact Gateway Technical Support The system hangs at CT_srv starting Follow these steps to resolve the problem Verify that there are no SCSI address conflicts Check the enclosure to make sure everyt...

Страница 58: ...power is available to the power supplies If the enclosure is plugged into a three hole grounded outlet verify that power to the outlet has not been interrupted This can be accomplished by testing the...

Страница 59: ...s Error events let you know that something related the enclosure controller or drives has failed and requires immediate attention The table below defines each error event and recommends the action you...

Страница 60: ...es you can see that this is a medium error unrecovered read error recommended reassignment Sense key descriptions DISK CHAN FAILED An error has occurred in communicating on the disk channel Check the...

Страница 61: ...tion failed 0C 03 Write error recommend reassignment 11 00 Unrecovered read error 11 01 Read retries exhausted 11 02 Error too long to correct 11 03 Multiple read errors 11 04 Unrecovered read error a...

Страница 62: ...lem Errors that cannot be corrected with retries will result in another critical event Disk channel error codes Error code Description 04 Data overrun or underrun occurred while getting sense data 05...

Страница 63: ...of third party channel reset displayed as Abort 3PRST 44 Controller decided to abort I O request for reasons other than bus or target reset 45 I O request was aborted because of target reset requested...

Страница 64: ...60 Chapter 4 Troubleshooting www gateway com...

Страница 65: ...5 61 Maintenance In this chapter you will find the maintenance procedures to replace enclosure components...

Страница 66: ...gateway com Removing the front bezel To remove the front bezel 1 Rotate the two thumbscrews counterclockwise one quarter turn to unlock the front bezel 2 Grasp and pull the front bezel from the enclo...

Страница 67: ...placing the cooling fans The cooling fan module is hot swappable Warning Do not operate the enclosure for extended periods of time greater than five minutes with the cooling fan module removed No cool...

Страница 68: ...IO N A D D J U M P E R T O S U P P L Y T E R M P O W E R J P 3 J P 2 J P 4 J P 1 A D D J U M P E R T O D IS A B L E T E R M IN A T IO N A D D J U M P E R T O S U P P L Y T E R M P O W E R J P 3 J P 2...

Страница 69: ...o the enclosure until it completely seats The latch will reset when the module is completely seated and the front bezel Fan Status LED will return to a normal state green 4 Using the packaging materia...

Страница 70: ...M P O W E R J P 3 J P 2 J P 4 J P 1 A D D J U M P E R T O D IS A B L E T E R M IN A T IO N A D D J U M P E R T O S U P P L Y T E R M P O W E R J P 3 J P 2 J P 4 Controller 1 Controller 2 Controller 2...

Страница 71: ...are hot swappable Be careful of the P factor effect when removing a drive which is the twisting of the drive in your hand as a result of the spinning disk Allow the drive to completely spin down befo...

Страница 72: ...hen remove the drive The drive carrier has tension clips which ensures that the drive fits very tightly It requires some force to remove or install the drive 4 Remove the replacement drive from its sh...

Страница 73: ...tension clips ensure that the drive fits very tight so it requires some force to push the drive into its bay 7 Re install and secure the front bezel Using a Phillips screwdriver rotate the fasteners...

Страница 74: ...must POWER DOWN the storage system to replace this card J P 7 A D D J U M P E R T O D IS A B L E T E R M IN A T IO N JP8 C N F G 1 C N F G 2 R A I D S P A R E 1 S P A R E 2 B A U D S E L D L Y S T R...

Страница 75: ...ure on page 29 13 Using the packaging materials from the replacement card repackage the failed card and return it per your return instructions J P 7 AD D JU M PE R TO D IS AB LE TE R M IN AT IO N AD D...

Страница 76: ...72 Chapter 5 Maintenance www gateway com...

Страница 77: ...A 73 Technical Information Specifications...

Страница 78: ...5 lbs w o drives 58 00 lbs with twelve drives Altitude 200 to 10 000 feet Number of drives supported 12 per enclosure Total capacity 1 752 GB 146 GB Drives Host interface Ultra320 SCSI Drive interface...

Страница 79: ...B 75 Port Information Connectors This appendix contains pin signal information for the SCSI connectors located on the SAF TE Disk I O and Host I O cards...

Страница 80: ...the enclosure are the RS 232 service ports One RS 232 port is labeled SAF TE It provides the serial interface to the SAF TE Disk I O card allowing for firmware uploads maintenance and or service moni...

Страница 81: ...Commission FCC Unintentional emitter per FCC Part 15 This device has been tested and found to comply with the limits for a Class A digital device pursuant to Part 15 of the FCC rules These limits are...

Страница 82: ...tlet on a different circuit from that to which the receiver is connected Consult the dealer or an experienced radio TV technician for help Canada Industry Canada IC Unintentional emitter per ICES 003...

Страница 83: ...veCPR ALR AnyKey black and white spot design CrystalScan Destination DestiVu EZ Pad EZ Point Field Mouse Gateway 2000 Gateway Country gateway net Gateway stylized logo Perfect Scholar Solo TelePath Vi...

Страница 84: ...80 Appendix C Safety Regulatory and Legal Information www gateway com...

Страница 85: ...ule 8 Cooling Fans 8 D Dimensions 74 Disk Channel Errors 58 Disk Errors 56 Drive Activity LEDs 34 Drive Configuration JBOD 12 21 JBOD 24 25 Drive LEDs 12 33 Drive Status LED 35 54 Drive Status LEDs 34...

Страница 86: ...acing a SAF TE Disk I O card 70 Replacing the Cooling Fans 63 RS 232 Ports 10 S SAF TE Card Firmware 41 SAF TE Disk I O Card 9 SAF TE RS 232 Serial Port 76 SAF TE Service Port 10 SCSI Bus Hangs 50 SCS...

Страница 87: ......

Страница 88: ...A MAN 850 SCSI JBOD USR GDE R0 8 03...

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